Zoom Car — subscribed to a car 4 months back, but not yet delivered

I have subscribed to tata tiago veteran on march 06th and all the documents have been cleared in the month of march. I have waited during the lockdown period but till now they have not delivered the car. Their toll-free number is also not responding (It is going to unlimited waiting waited to 20 minutes but still no reply). I have mailed them in zap. [protected]@zoomcar.com but no updated from them (Just replying that concern team is checking). Please help, i don't have any other way apart from telling here.